the only thing changed was gbox so sinceoutput shaft speed is same as out gbox then i guess the worm drive might be different
but anyway i fitted an electronic speedo ratio box and with abit of tinkering i got speedo to read 100 when im at 100
all guess work for now
will get it checked properly soon
but the retardin prob has gone
changes gears much better and changes gears at hi revs when givin it stick
so seams it was all speed related
maybe the ecu was readin gto fast a speed to change gears
and during the gear change the speed would change abit mnore than usual and maybe this was givin ecu an error and retardin timing
so from now one any auto 1uz i do i wil make sure speedo signals are correct